A cyclone rotates faster and faster as pressure differences between areas of low and high pressure increases
Answer:
2.78 x 10⁻² M
Explanation:
Step 1:
Data obtained from the question.
Volume = 225mL / 1000 = 0.225L
Mass of K₂SO₃•8H₂O = 1.89g
Molarity =..?
Step 2:
Determination of the number of mole of K₂SO₃•8H₂O
This is illustrated below:
Mass of K₂SO₃•8H₂O = 1.89g
Molar mass of K₂SO₃•8H₂O = (39x2) + 32 + (16x3) + 8[(2x1) + 16] = 78 + 32 + 48 + 8[18] = 302g/mol
Number of mole = Mass/Molar Mass
Number of mole of K₂SO₃•8H₂O = 1.89/302 = 6.26x10⁻² mole
Step 3:
Determination of the molarity.
Molarity = mole /Volume
Molarity = 6.26x10⁻² /0.225
Molarity = 2.78 x 10⁻² M
Therefore, the molarity of the solution is 2.78 x 10⁻² M
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Mole ratio:
2 CH3COOH + Ba(OH)2 = Ba(CH3COO)2 + 2 H2O
2 moles CH3COOH -------------- 1 mole Ba(OH)2
0.445 moles CH3COOH --------- ??
0.445 x 1 / 2
=> 0.2225 moles of Ba(OH)2
Answer:
And what is your question
Explanation:
